The main component of the previously claimed strong discriminatory signal is due to several data analysis pitfalls that in combination led to the strongly optimistic results.
We identified two data analysis pitfalls in [8] that caused over-optimistic conclusions in the original paper: First, the SNP selection method was severely biased toward claiming significance for SNPs that are not truly associated with the disease.
In conclusion, our findings suggest that several data analysis pitfalls of [8] led researchers to identify SNPs that are not statistically significant and to derive a severely biased estimate of classification performance of esophageal cancer patients and healthy controls on the basis of these SNPs.
Like almost all phylogenetic methods that deal with large collections of heterogeneous data, many pitfalls during compilation and analysis of the data exist (reviewed in [ 6]).
However, this approach was subsequently revealed to have suffered from several known data analysis pitfalls (e. g., overfitting and concept drift) so that by 2012 2013, the prevalence of flu was being greatly overestimated.
Individual data from pitfall traps were separated into two groups based on the presence or absence of P. chinensis within each pitfall trap.
Data from pitfall traps and hand collecting were pooled for each site to estimate the proportion of the local ant species assemblage that forages on EFN plants.
Since the first meeting he has advised the scientists on how best to analyse their data and what pitfalls to avoid.
The details of assay rationale and design, instrumentation, pitfalls, data analysis, and further validation steps are described.
However, it should be borne in mind that manufacturers or sales outlets are frequently not aware of all the parameters of an installation, and the interpretation of catalogue data has many pitfalls.
There's no question that big data has some pitfalls.
